Finding the Fourth Proportional to 112,654.69, 155,470.99 and 64,911.13

Step by Step Solution

1. Step 1: Write the proportion equation
   112,654.69 : 155,470.99 = 64,911.13 : x
2. Step 2: Convert to fraction form
   112,654.69/155,470.99 = 64,911.13/x
3. Step 3: Cross multiply
   112,654.69x = 155,470.99 × 64,911.13
4. Step 4: Simplify right side
   112,654.69x = 10,091,797,643.12
5. Step 5: Solve for x
   x = 10,091,797,643.12/112,654.69
6. Step 6: Final answer
   x = 89,581.69